IEEE 937:2007 pdf free download.IEE Recommended Practice for Installation and Maintenance of Lead-Acid Batteries for Photovoltaic (PV) Systems.
4.3 Electrical
Electrical installations shall, when applicable, be in accordance with appropriate electrical codes and regulations Isuch as the National Electrical CodeR (NEC :)J [B 12].
a) Considerations should be given to insulating bare terminals. lugs. fittings, and other live parts to reduce the risk of fire, shocks, and burns to personnel.
b) Electrical cabling to the batteiy should be designed so that it does not obstruct access space provided for maintenance and safety, nor result in undue stress to battery terminals.
C) All battery syslems should be provided with ovcrcurnmt protection and disconnecting rncans. This also applies to all potential current-canying instrumentation and control leads connected to the battery system.
d Systems that are grounded should be grounded according to appropriate codes.
C) Consideration should be given to providing essential instrumentation and alarm functions, if not provided by the charging control. These include:
1) Voltmeter
2) Ammeter
3) High- and low-voltage indicators
4) Ground fault detector(s)
5) Temperature sensor(s)
1) If parallel strings arc used, the cables to each string need to safely accommodate the current from the entire load.
4.4 Seismic
When a PV system is installed in a location subject to a high probability of seismic disturbance or where applicable codes require seismic protection, the battery shall be designed and installed in a manner that withstands the calculated seismic forces and provides for potential electrolyte leakage. If local codes arc unknown in the U.S.. for example, refer to the earthquake toning map in the Uniform Building Cede [B 13].
5. Installation procedures4
5.1 Receiving and storage
5.1.1 Receiving inspection
The following should be considered when the battery shipment is received:
a) Upon receipt. inspect the shipment for damage that might have occurred in transit.
b) Take notice of the shipping date. Timely unpacking may be required in order to follow the manufacturers recommendation on the freshening charge.
IEEE 937:2007 pdf free download
